
* Add new ENV function for selecting stdlib for Clang. - The selection is no-op for non-system-clang compilers. - Both superenv and stdenv are handled. * Add new HOMEBREW_CCCFG flag and ccwrapper handling.
* Add new ENV function for selecting stdlib for Clang. - The selection is no-op for non-system-clang compilers. - Both superenv and stdenv are handled. * Add new HOMEBREW_CCCFG flag and ccwrapper handling.